12220322012 has 12 divisors (see below), whose sum is σ = 21389395440. Its totient is φ = 6109066176.

The previous prime is 12220321961. The next prime is 12220322029. The reversal of 12220322012 is 21022302221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248333 + ... + 293444.

It is an arithmetic number, because the mean of its divisors is an integer number (1782449620).

Almost surely, 2^12220322012 is an apocalyptic number.

It is an amenable number.

12220322012 is a deficient number, since it is larger than the sum of its proper divisors (9169073428).

12220322012 is a wasteful number, since it uses less digits than its factorization.

12220322012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547420 (or 547418 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12220322012 its reverse (21022302221), we get a palindrome (33242624233).

The spelling of 12220322012 in words is "twelve billion, two hundred twenty million, three hundred twenty-two thousand, twelve".